Deutsch 
English Ignition transformer AEG/Trafo Union/Siemens ZM 20/10 230 V, 50 Hz, 1.1 A, Sec. 2 x 5 kV, 20 mA, ta 35/B, ED 33% in 3 min. material no. 0 042 597 3, mains connection 3-pin flat plug, 2 x ignition cable connection 4 mm pluggable, e.g. for Viessmann ( 7819463 ).